Issue 01 · Foundations

The years after the puppy years are the ones we're learning to make better.

Dog Healthspan is an independent journal translating peer-reviewed canine longevity science into the small daily decisions that compound into more — and better — years.

A senior golden retriever resting in golden hour light
The Cover Story
All articles
Amber dropper bottle in warm light
Foundations · 9 min

Healthspan, Not Just Lifespan: The New Science of Aging Well in Dogs

Adding years to your dog's life is the easy part. Adding life to those years is what the next decade of canine medicine is really about.

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Fresh longevity ingredients on stone
Nutrition · 11 min

The Lean Dog Protocol: Why Body Condition Is the Single Best Longevity Lever

A landmark 14-year Labrador study found that lean dogs lived nearly two years longer than their littermates. The mechanism — and the practical playbook — is now clear.

A dog mid-stride in a meadow at golden hour
Movement · 8 min

Movement Is Medicine: The Cellular Case for the Daily Walk

What an hour of sniffing, trotting, and exploring actually does to a dog's mitochondria, brain, and joints — and why intensity matters less than you think.

An owner's hand resting on a senior dog's head
Cognition · 10 min

The Gray Muzzle Mind: Catching Cognitive Decline Before It's Visible

Canine cognitive dysfunction affects 28 percent of dogs aged 11 to 12, and 68 percent by age 16. The early signs are subtle — and the window for intervention is wider than most owners realize.

A senior dog sleeping on a linen blanket
Recovery · 7 min

The Sleep Prescription: Why Rest Is the Most Underrated Longevity Input

Adult dogs need 12 to 14 hours of sleep. Seniors need 16 to 18. The quality of that sleep is doing more biological work than almost anything else in their day.

A senior dog beside a bowl of supplement capsules
Formulation · 8 min

The Absorption Problem: Why Most Dog Supplements Never Reach the Cell

You can put the right ingredient in the bowl and still deliver almost none of it. The bottleneck isn't the formula — it's what stomach acid does to it on the way down.

Amber jar of gut health powder on linen
Gut Health · 9 min

The Gut Is the Immune System: What 'Sensitive Stomach' Is Actually Telling You

Roughly 70 percent of a dog's immune cells live in the gut wall. The chronic loose stool, the dull coat, the itchy paws — they are often the same conversation.

A young puppy walking in a meadow at golden hour
Mobility · 9 min

The Joint Conversation Starts at One: Protecting the Frame Before It's the Problem

By the time a large-breed dog is limping, the cartilage damage is years old. The window that actually matters opens in puppyhood and closes quietly around age three.

Editorial position

Most dog content is sold to you by someone with something to sell. We write what we'd want a friend to send us — and we tell you when we have skin in the game.

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